User`s manual

If DIO14 is HIGH  select D/I*8  D/I signals are come from J5
Select D/I*8 as following:
SetDio14Dir(0); /* select DIO14 as D/O */
SetDio14High(); /* select D/I*8 */
DiVal=inportb(BASE); /* read D/I*8 (from J5) */
Select D/I*8 as following:
SetDio14Dir(0); /* select DIO14 as D/O */
SetDio14Low(); /* select D/O*8 */
outportb(BASE,DoVal); /* set value of D/O*8 (to J5) */
DiVal=inportb(BASE); /* D/O*8 read back */
I/O Expansion Bus for 7188X/7188E User’s Manual, Jun/2004 v1.4, 7PH-000-14---55